If she is spraying flammable liquids (which is normally the case in
composite layup and sprayup), she will then fall under 29 CFR 1910.107
Spray Finishing Using Flammable and Combustible Materials and 29 CFR
1910.94(c) Ventilation: Spray Finishing Operations, not to mention NFPA
33 and whatever the local fire marshal may require. She needs a booth
specially designed for spraying flammable materials.
I am sensitized to isocyanates because of a researcher who thought a
lab hood was acceptable for the same thing.
If you want a quick read on some of the other standards that may apply
to such operations, we have a booklet on our Web site that we put out
several years ago during a special emphasis program covering
layup/sprayup. (We have a lot of shops of varying sizes here in
Minnesota.) It's based on an old NIOSH booklet that staff updated and
Minnesota-ized. It can be found at
http://www.doli.state.mn.us/pdf/fiberglass.pdf.
- Diane Amell, MNOSHA
>>> Debbie Decker 8/29/2007 11:18 AM >>>
Greetings:
As ever, please excuse the cross-postings. I have a new researcher
whose topic of interest is composites. She does lay-up and
manufacture
of composites using various epoxies and resins. She also tests
composites with various liquids with which the composites might come
in
contact - jet fuel, de-icing liquids, etc.
We are renovating lab space for her and she needs a place to "lay-up"
various composite materials and vacuum bag the pieces to cure. She
has
plans to do work on a full-scale car bumper and an unmanned vehicle of
some sort.
Currently, they work with small pieces in a (very small) fume hood and
wear respirators when working outside of the hood. I'm
philosophically
uncomfortable with folks routinely wearing respirators. We can
engineer
out this hazard!
A traditional fume hood probably won't work. Backdraft won't allow
for
access all the way around the work piece. We use down draft tables in
anatomy teaching but will traditional down draft work in this
situation
with such a large surface area?
Lemme know what ya'll think.
Thanks,
Debbie
-----------------
Debbie M. Decker, Campus Chemical Safety Officer
Environmental Health and Safety
University of California, Davis
1 Shields Ave.
Davis, CA 95616
(530)754-7964/(530)752-4527 (FAX)
dmdecker**At_Symbol_Here**ucdavis.edu
Co-Conspirator to Make the World A
Better Place -- Visit www.HeroicStories.com and join the conspiracy

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